Han Jung-woo, a pilot with top-class skills, is flying high and even appears on a famous TV show. But everything comes crashing down when a careless mistake causes him to lose everything, even his job. Blacklisted in the industry, no airline is willing to hire him. Desperate with no other choice, Han Jung-woo transforms completely into his younger sister's identity and succeeds in landing a job as a pilot.

A love story between Jae-hoon, who couldn't let go of his ex-girlfriend, and Seon-young, who is splitting up with her boyfriend. The couple got trouble and were hurt by love.